Respuesta :

sreyad

angles BAC and BCA are equal = 69

69 +69 = 138

angles in a triangle =180

180-138 = 42

5x + 2 = 42

5x = 40

x = 8

Answer:

x = 8 degrees..

Step-by-step explanation:

This is an isosceles triangle so the base angles are equal and the vertex angle = 180 - 2*69

= 42 degrees.

Therefore:

5x + 2 = 42

5x = 40

x = 8 (answer).